68 entries under harden topic. ×

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become firm(verb, expression, fix, solidify)
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become hard(verb, expression, solidify)
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become rigid(verb, expression, thicken, solidify)
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casehardened(close, set, firm, dry)
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get hard(verb, expression, set, freeze)
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stabilize(verb, strengthen, reinforce, thicken)
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tauten(verb, strengthen, tense, reinforce, chill)
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tense(verb, strengthen, reinforce, chill)
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APASmart Define. (2015). clot thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/clot/thesaurus/synonyms
ChicagoSmart Define. 2015. "clot thesaurus" https://smartdefine.org/clot/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, clot thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/clot/thesaurus/synonyms>.
MLASmart Define. "clot thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/clot/thesaurus/synonyms>